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UpgradeAchilles tendonitis and ruptures occur in middle-aged due to chronic strain and minor trauma.
Achilles tendon is distal continuation of the calf muscle which is made up of two heads of gastrocnemius that arises from back of the femoral condyles above the knee and the soleus that arises from back of the tibia. Function of gastrocnemius to give push-off in terminal stance phase of gait and is useful motor in sprinting and jumping. Soleus is an antigravity muscle that allows slow controlled progression of the shank (tibia) on the ankle during forward progression whilst walking.